The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · reissued

SA1762SO

Install two Teledyne Continental Motors model IO-550-C engines, Hartzell or McCauley propellers, nose cowling (P/N 74000-1) per Colemill Enterprises, Inc. Dwg. No. 74000, Initial Release dated October 29, 1984, and winglets (P/N 66000-50 and -51) per Colemill Enterprises Dwg. No. 66000, Initial Release dated October 29, 1984, in accordance with Colemill Enterprises, Inc. Installation Instructions for Modification of Beechcraft Models: C55, D55, E55, and 58 , dated September 14, 1984, or later FAA approved revision of this document or either drawing. Held by Mike Jones Aircraft Sales INC., which holds 19 approved modifications in all. Last revised February 10, 2011. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company
Models
E55, D55, 95-C55, 58A, 58
Type certificates
3A16, 3A16, 3A16, 3A16, 3A16
On this site
Beechcraft 58 Baron 1,295 registered
Beechcraft 95 Travel Air and Baron 55 1,245 registered
The FAA's record
On the FAA's site

What an approved modification is

A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.

Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 13, 2026.